RN50C4322FRE6 Equivalent & Substitute Parts

Part Overview

The RN50C4322FRE6 is a 43.2 kOhms ±1% metal film axial through-hole resistor rated at 0.05W (1/20W) manufactured by Vishay Dale. This component is part of the Military MIL-R-10509/8 series and features flame retardant coating with moisture resistance suitable for military applications. The part is currently active in production with 783 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this resistor category.

Substiute Parts

RN50C4322FRE6

Vishay DaleIn Stock: 860RN50C4322FRE6 Datasheet

Current PartRFQ

RNF14FTD43K2

Stackpole Electronics IncIn Stock: 14786RNF14FTD43K2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The RNF14FTD43K2 manufactured by Stackpole Electronics Inc qualifies as a substitute based on the following critical parameters:

• Identical resistance value: 43.2 kOhms
• Matching tolerance: ±1%
• Equivalent composition: Metal Film
• Compatible package: Axial through-hole
• Flame retardant coating present
• Safety-rated construction

The substitute maintains the core electrical specifications (resistance and tolerance) and mechanical form factor required for direct replacement in axial through-hole applications. Differences in power rating (0.25W vs 0.05W), temperature coefficient (±100ppm/°C vs ±50ppm/°C), and operating temperature range represent acceptable variations within standard resistor substitution practices for non-critical applications.

Parameter Comparison

Engineering Selection Recommendations

The RNF14FTD43K2 serves as a functional substitute for the RN50C4322FRE6 in applications where the primary requirements are resistance value, tolerance, and axial package compatibility. Both parts maintain active production status and are currently available in inventory.

The substitute offers improved RoHS3 compliance status compared to the main part. The higher power rating (0.25W) of the substitute provides additional thermal margin in circuit operation. The operating temperature range of the substitute (-55°C ~ 155°C) is narrower than the main part (-65°C ~ 175°C), requiring verification that application temperature extremes remain within the substitute's specified limits.

The temperature coefficient difference (±100ppm/°C vs ±50ppm/°C) may impact precision analog circuits requiring tight frequency or gain stability. Applications with stringent temperature stability requirements should retain the original RN50C4322FRE6 specification.

Frequently Asked Questions (FAQ)

Q: Can the RNF14FTD43K2 be used as a direct replacement for the RN50C4322FRE6?

A: Yes, for applications where the operating temperature range remains within -55°C to 155°C and temperature coefficient tolerance of ±100ppm/°C is acceptable. The identical resistance, tolerance, composition, and axial package ensure mechanical and electrical compatibility in standard through-hole circuit designs.

Q: What are the key differences between these two resistors?

A: The primary differences are power rating (0.25W vs 0.05W), temperature coefficient (±100ppm/°C vs ±50ppm/°C), operating temperature range (-55°C ~ 155°C vs -65°C ~ 175°C), and RoHS compliance status. The substitute provides higher power dissipation capability and improved environmental compliance.

Q: Does the higher power rating of the substitute affect circuit performance?

A: The higher power rating does not negatively affect circuit performance. A 0.25W resistor can safely operate in applications designed for 0.05W resistors, as it provides additional thermal headroom. Physical dimensions are slightly larger (0.093" Dia x 0.250" L vs 0.065" Dia x 0.150" L), which must be verified against PCB layout constraints.

Q: Are both parts suitable for military applications?

A: The RN50C4322FRE6 is specified for military applications under MIL-R-10509/8. The RNF14FTD43K2 is a commercial-grade substitute with flame retardant and safety features but is not designated as a military-grade component. Military specification requirements must be confirmed before substitution.

Q: What packaging formats are available for these parts?

A: The RN50C4322FRE6 is supplied in Tape & Reel (TR) packaging. The RNF14FTD43K2 is supplied in Cut Tape (CT) packaging. Both are axial through-hole components suitable for automated assembly processes.